Tire tread



FIG. 1 is a perspective view of a tire tread showing our new design it being understood that the pattern is repeated throughout the circumference thereof;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is an enlarged fragmentary front view thereof. 

The ornamental design for a tire tread, as shown and described. 